Trajectory planning is always a hot issue for harvesting manipulators, considering the limitations of the manipulator mechanical structure and other nonlinear factors that result in long time, big jerk and high energy consumption of the manipulator in tracking the picking path.The cubic spline algorithm, fifth-order polynomial interpolation algorit
Composition of nitrogen in urban residential stormwater runoff: Concentrations, loads, and source characterization of nitrate and organic nitrogen.
Stormwater runoff is a leading cause of Covers nitrogen (N) transport to water bodies and hence one means of water quality deterioration.Stormwater runoff was monitored in an urban residential catchment (drainage area: 3.89 hectares) in Florida, United States to investigate the concentrations, forms, and sources of N.Runoff samples were collected o
Analysis of nonlinear vibration characteristics of dual-rotor system under bearing misalignment-rub-coupling fault
In order to reveal the vibration characteristics of fault rotor TV Show Posters systems caused by the bearing misalignment, the expression of the rotor deflection displacement under the bearing misalignment was derived through the coordinate transformation relation.On this basis, the dynamic model of the double disk rotor system with the coupled be
Gnathovorax cabreirai: a new early dinosaur and the origin and initial radiation of predatory dinosaurs
Predatory dinosaurs were an important ecological component of terrestrial Mesozoic ecosystems.Though theropod dinosaurs carried this role during the Jurassic and Cretaceous Periods (and probably the post-Carnian portion of the Triassic), it is difficult to depict the Carnian scenario, due to the scarcity of fossils.Until now, knowledge on the earli
The effect of cyclones crossing the Mediterranean region on sea level anomalies on the Mediterranean Sea coast
Large positive and negative sea level anomalies on the coast of the Mediterranean Sea are linked to intensity and position of cyclones moving along the Mediterranean storm track with dynamics involving different factors.This analysis is based on a model hindcast and considers nine coastal stations, which are representative of sea level anomalies wi